Curzi was forced to apologize and retract a statement he made in October 2007 during a radio interview that appeared to suggest that a sovereign Quebec would have "more teeth" and could potentially remove the voting rights of Quebec's English-speaking community living on Montreal's West Island.[1] He faced some criticism in 2008 as one of two MNAs, along with Daniel Turp, who endorsed a controversial petition opposing Paul McCartney's performance at Quebec City's 400th anniversary celebrations.[2] In September 2010, Curzi expressed on the television interview show Les Francs-tireurs his theory that there was a shortage of Francophone players on the National Hockey League team the Montreal Canadiens and that this was "damned well political" and the result of a federalist plot.[3]

On June 6, 2011, Curzi and caucus mates Louise Beaudoin and Lisette Lapointe resigned from the Parti Québécois to sit as independents over the PQ's acceptance of a bill changing the law to permit an agreement between the City of Québec and Quebecor Inc. concerning the construction of an arena in Quebec City.[4]